Stenciling apparatus



June 4, 1940.

J. DICHTER 2,203,457

STENCILING APPARATUS Filed Sept. 6, 1958 awe/Who'll Patente dJune4,194Q t n 2,203,457

UNITED STATES PATENT orrlca Applicationj septembcr s, 1938, Serial No. 228,640 In Germany September 18, 1937 3 Claims. (Cl. 101--1 14) The present invention relates to the applicadescribed, consists in completely filling the retion of colored inscriptions and designs to glass, ceptacle with coloring material and then fixing ceramic or similar smooth, non-absorptive surthe stencil, having a suitable design or pattern faces. More particularly, the invention pertains cut from its gelatin coating, over the upper open 5 we method and apparatus for stenciling letend or mouth of. the receptacle ID. The supply 6 ters, designs, or other markings on the ware. of coloring material within the receptacle com- In previous methods of applying fluid fusible pletely fills the receptacle, but the pressure colors to glass and ceramic ware, it has been thereon is insufficient to force it through the found difficult to apply a sufficient quantity of screen. If, however, additional pressure is m the coloring material to provide satisfactory adplaced on the top of the slidable section II, as for 10 hesion thereof unless expensive or time-consuminstance by properly positioning the ware against ing steps are employed. the screen and exerting a downward pressure One of the objects of the invention is to apply thereon, the coloring material will be forced the coloring materialto the warethrough a sham through the screen onto the ware. This presl3 cil andin such a manner thatsuflicient pressure sure is maintained until a suflicient quantity of is exerted on the coloring material to produce a the coloring material has been forced through the clear outline. screen and adheres to the ware. The quantity of Another, object of the invention is to apply coloring material is, of course, governed by the thepressure to the fluid through the medium of pressure exerted and the duration of the presthe ware to which the colors are to be applied. sure. Since the gelatin coating is impervious, 20

Other objects will be apparent from the folthe coloring material will be forced through that lowing description thereof taken with the accomportion of the screen only from which the coatpanying drawing, in which: ing has been removed.

Fig. 1 is a sectional front elevation. illustrat- While the drawing of the apparatus is more ing diagrammatically onetype of apparatus for or less diagrammatic, it is intended that the de- 25 a yi ou the method herein described; and vice shown he used for hand operation as well as Fig. 2 is a fragmentary section through the in automatic machines. In many types of autostencil. matic machinery for making glass articles, such In the d a a ecep a e des gned t for example as vials or bulbs which are shaped on hold a quantity of a semi-fluid coloring material, from glass tubing, large quantities of these arti- Consists of two parts II and I2, the former bein cles may be produced at a relatively low cost. telescopically slidable in the lower part l2. Suit- In machines of this type, it is apparent that a able packing I3 is interposed between the walls of modified form of apparatus embodying the printhese parts to prevent leakage from the receptaciples of that shown in the drawing may be cle; It will be seen that the lower section I2 is m de n auxiliary part of the automatic ma 3:; 1 0 3 atiitts pp While e pp chine and the articles provided with color mark! tion I I is p at a h d t r t upp ings before they leave the machine. It is obviend 4 in r du d to f a uth v h ous that the use of such a device will reduce the the stencil 5 ay b e e y Suitable cost of making and coloring the articles. When ing means The Stencil is that y in which the articles are cylindrical or prismatic in form, 40 a meshed silk fabric I1 is provided with a coatth may be rolled over the stencil and at the ing of gelatin Similar material la, the Outline same time sufficient pressure is exerted during of the des g o lettering being formed by Cutting the rolling operation to transfer the necessary away the ge at .5 indieeted by n s quantity of color to the article.

If desired, the receptacle I!) may be connected The receptaclemay consist only of the tele- 45 wi h a pp y rv r 0 n nin l rin scoping parts H and I2, but since it is desirable mat rial un e o s t p s re pp i d y h that the screen be supplied continuously with a Weighted piston 2|. The receptacles l0 and 20 coloring material, the reservoir 2|] is preferably are connected by means of a suitable conduit 22. used in connection with the container to which The weight of the piston 2Iis such that it will the transfer stencil is attached, It is evident 5o exert a pressure within the receptacle l0 insuffithat by using a reservoir in connection with the cient to force the coloring material through the transfer receptacle, it will not be necessary to stencil, but suflicient to maintain a full supply of disassemble the telescoping parts of the latter to coloring material in the receptacle ID at all times. fill the same with a fresh supply of coloring ma- The method of employingthe apparatus just terial. It is only necessary that the reservoir be 55 periodically refilled or further supplied with the fluid coloring material to'maintain a suiflcient quantity of the material in the transfer receptacle at all times.

While a preferred form of apparatus has been described and the method of using the same has been set forth in detail, it is not intended that the present invention be limited to the exact de tails or steps referred to herein.

What is claimed is: v

1. In an apparatus for applying fluid coloring material to glass and similar ware, a receptacle for holding the material comprising a pair of' hollow members, one telescoped within the other and relatively movable thereto, said one member having an open mouth, a stencil secured to said one member over said mouth, and means for imposing a pressure on the material in said receptacle to force the material against the stencil but insufiicient to force the material through the stencil.

2. In an apparatus for applying fluid coloring material to glass and similar ware, a receptacle for holding the material comprising a pair of hollow members, one telescoped within the other and relatively movable thereto, said one member having an open mouth, a stencil secured to said one member over said mouth, a second receptacle communicating with said first-mentioned receptacle and adapted to supply material to the first-mentioned receptacle, and means in said second receptacle for imposing a pressure on the material in said receptacles sufilcient to force the material against the stencil but insufiicient to force the material through the stencil.

3. In an apparatus for applying fluid coloring material to glass and similar ware, a receptacle for holding the material comprising a'pair of cylindrical shells, one telescopically and vertically slidable within the other, said one shell being open at each end thereof and having a stencil secured over the upper open end thereof, a second receptacle communicating with said first-mentioned receptacle and adapted to supply material to the first-mentioned receptacle, a weighted piston in said second receptacle for imposing a pressure on the material in both of said receptacles sufficient to force the material against the stencil but insufficient to force the material through the stencil, said one shell being movable when external downward pressure is imposed thereon to force the material through the stencil.

JAKOB DICHTER. 

